Coupling structure and construction structure body

ABSTRACT

A coupling structure in which two structure members (1, 2) are connected to each other. The structure members integrally have projecting parts (32, 42) projecting from one side part (A side or B side) thereof, respectively. The two structure members are close to each other, and the projecting parts overlap the side parts of the counterpart structure members (2, 1) so as to be positioned on sides opposite to each other, respectively. The projecting parts and the side parts of the counterpart structure members are each fixed by bolt joint. Thus, mainly, it is possible to provide a coupling in which the number of components used for connecting the structure members to each other is reduced, projection from (flange parts of) the structure members is eliminated, and construction is easily performed.

TECHNICAL FIELD

The present invention relates to a coupling structure and a construction structure body.

BACKGROUND ART

For example, structure members such as steel frames or the like have been used for a framework of a building or the like. Such structure members are assembled to each other according to the building to become the framework (construction structure body) described above.

When assembling the structure members to each other, the structure members have been connected to each other by bringing splice plates into contact with connection parts between the structure members and fixing the splice plates with bolts (see, for example, Patent Literatures 1 to 5).

CITATION LIST Patent Literature

[Patent Literature 1] JP 2012-57450

[Patent Literature 2] JP 2012-127165

[Patent Literature 3] JP H06-173340

[Patent Literature 4] JP S51-32006

[Patent Literature 5] JP S62-175107

SUMMARY OF INVENTION Technical Problem

However, in a case of connecting the structure members to each other using the splice plate as in each of the above Patent Literatures, a large number of splice plates have been required in addition to the structure members, and the number of components that are used has thus been increased. In addition, a large number of bolts have been required to fix a large number of splice plates, and it has taken a lot of time and effort to fix the bolts.

Therefore, an object of the present invention is mainly to solve the problem described above.

Solution to Problem

In order to solve the above problem, the present invention provides a coupling structure in which two structure members are connected to each other, wherein the structure members integrally have projecting parts projecting from one side part thereof, respectively, the two structure members are close to each other and the projecting parts overlap side parts of counterpart structure members so as to be positioned on sides opposite to each other, respectively, and the projecting parts and the side parts of the counterpart structure members are each fixed by bolt joint.

Advantage Effects of Invention

According to the present invention, with the configuration described above, it is possible to provide a coupling structure in which the number of components used for connecting the structure members to each other is reduced, projection from (flange parts of) the structure members is eliminated, and construction is easily performed.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is an exploded perspective view of a coupling structure according to the present embodiment.

FIG. 2 is a longitudinal sectional view of the coupling structure of FIG. 1.

FIG. 3 is a side view of the coupling structure of FIG. 1.

FIG. 4 is a horizontal sectional view taken along a central part of the coupling structure of FIG. 1 in a vertical direction and viewed from the bottom.

FIG. 5A is a side view illustrating a first modification of the coupling structure and similar to FIG. 3.

FIG. 5B is a side view illustrating a second modification of the coupling structure and similar to FIG. 3.

FIG. 5C is a side view illustrating a third modification of the coupling structure and similar to FIG. 3.

FIG. 6A is a side view illustrating a fourth modification of the coupling structure and similar to FIG. 3.

FIG. 6B is a horizontal sectional view taken along a central part of the coupling structure of FIG. 6A in a vertical direction and viewed from the bottom.

FIG. 6C is a longitudinal sectional view of the coupling structure of FIG. 6A.

FIG. 7A is a side view illustrating a fifth modification of the coupling structure and similar to FIG. 3.

FIG. 7B is a horizontal sectional view taken along a central part of the coupling structure of FIG. 7A in a vertical direction and viewed from the bottom.

FIG. 7C is a longitudinal sectional view of the coupling structure of FIG. 7A.

FIG. 8A is a principle diagram of the coupling structure according to the present embodiment.

FIG. 8B is a moment diagram in a case of FIG. 8A.

FIG. 9 is a view illustrating the coupling structure according to the present embodiment in combination with the moment diagram of FIG. 8B.

FIG. 10A is a moment diagram similar to FIG. 8B in a case where the number of bolts at each bolt joint part is pluralized.

FIG. 10B is a partially enlarged view of FIG. 10A.

FIG. 11 is a perspective view of a coupling structure according to a comparative example.

DESCRIPTION OF EMBODIMENTS

Hereinafter, the present embodiment will be described in detail with reference to the drawings.

FIGS. 1 to 11 are views for describing this embodiment.

First Embodiment

<Configuration> Hereinafter, a configuration will be described.

For example, structure members such as steel frames (steel members) are used for a framework of a building or the like. The framework (construction structure body) of the building is constructed by assembling the structure members to each other according to the building. When assembling the structure members to each other, it is necessary to connect the structure members to each other (or provide a coupling structure).

In contrast to the basic configuration as described above, this embodiment has the following configuration.

(1) A coupling structure between structure members will be first described.

The coupling structure of this embodiment is obtained by connecting two structure members 1 and 2 to each other as illustrated in FIG. 1 (see also FIGS. 2 to 4).

In the coupling structure, the structure members 1 and 2 integrally have projecting parts 32 and 42 projecting from one side part (A side or B side) thereof, respectively.

The two structure members 1 and 2 are close to each other, and the projecting parts 32 and 42 overlap the side parts (A sides or B sides) of the counterpart structure members 2 and 1 so as to be positioned on sides opposite to each other, respectively.

The projecting parts 32 and 42 and the side parts of the counterpart structure members 2 and 1 are each fixed by bolt joint.

Here, the two structure members 1 and 2 have substantially the same cross-sectional shape. The structure members 1 and 2 are mainly assumed to be various metal members such as steel frames (steel members), aluminum members or the like, but can be formed of wood, resin, other materials, a composite material using any one of these materials, or the like, depending on a situation. In the drawing, the structure members 1 and 2 extend linearly in a substantially horizontal direction. In this case, in the drawing, left and right surfaces of the structure members 1 and 2 are side parts (A sides or B sides) of the structure members 1 and 2. On the other hand, in the drawing, upper and lower surfaces of the structure members 1 and 2 are edge parts (or edge surfaces) of the structure members 1 and 2.

The projecting parts 32 and 42 are assumed to be fixed to the structure members 1 and 2 firmly enough to be considered to be integral with the structure members 1 and 2 in terms of strength. It is preferable that the projecting parts 32 and 42 project within a range in which they do not exceed the edge parts (edge surfaces) (upper and lower edge parts in the drawing) of the structure members 1 and 2 (in a vertical direction in the drawing) (that is, so as not to be spread and so as not to be bent).

When the structure members 1 and 2 are arranged close to each other, the projecting parts 32 and 42 are made parallel to each other.

The bolt joint is mainly joint using fasteners 51 such as bolts, nuts and the like (or riveting), or the like. Bolt joint parts are provided with bolt holes 52 (or rivet holes) for attaching the fasteners 51. The bolt joint will be described later.

In the embodiment of FIG. 1, a case in which the first projecting part 32 is provided integrally with the first structure member 1 on a right side part (A side) of the first structure member 1 and the second projecting part 42 is provided integrally with the second structure member 2 on a left side part (B side) of the second structure member 2 is illustrated. However, the first projecting part 32 may be attached to a left side part (B side) of the first structure member 1, and the second projecting part 42 may be attached to a right side part (A side) of the second structure member 2.

(2) In this case, it is preferable that the bolt joint between the respective projecting parts 32 and 42 and the side parts of the counterpart structure members 2 and 1 be performed at least at positions of distal end parts of two places of the respective projecting parts 32 and 42 spaced apart from each other.

Here, (a bolt joint part at) the distal end part of one projecting part 32 and (a bolt joint part at) the distal end part of the other projecting part 42 are spaced apart from each other by a required distance e (separation distance between the distal end parts (see FIG. 3)) at which a connection strength is obtained in a longitudinal direction 55 of the structure members 1 and 2.

The bolt joint part with respect to the distal end part of one projecting part 32 and the bolt joint part with respect to the distal end part of the other projecting part 42 (that is, bolt joint parts of two places spaced apart each other) can be each provided in a singular or in a plural number in a direction (vertical direction in FIG. 3) orthogonal to the longitudinal direction 55 of the structure members 1 and 2. For example, the bolt joint parts may be provided at positions of three places of upper and lower parts and a central part (a total of six places on the left and the right), as illustrated in FIG. 3, may be provided only at positions of one place of a central part in the vertical direction (a total of two places on the left and the right), as in an example of FIG. 5A, or may be provided at positions of two places of upper and lower parts (a total of four places on the left and the right), as in an example of FIG. 5B. Alternatively, the bolt joint parts may be provided at positions of four or more places in the vertical direction (for example, seven places on one side), as in an example of FIG. 6A (to FIG. 6C).

Furthermore, if the bolt joint parts of the two places spaced apart from each other as described above are provided, the bolt joint parts can be further increased. For example, in a case where the bolt joint parts are provided up to a full limit on a space in the direction orthogonal to the longitudinal direction 55 of the structure members 2 and 1, additional bolt joint parts may be further provided along the longitudinal direction 55 of the structure members 2 and 1, as illustrated in FIG. 5C. For example, in FIG. 5C, in contrast to FIG. 3, one bolt joint part is added to each of upper and lower places along upper and lower edge parts of the structure members 1 and 2 (so as to be U-shapes) (The same applies to FIG. 6A).

(3) Specifically, the projecting parts 32 and 42 are configured by connection members 3 and 4 including base parts 31 and 41 fixed to one side part (A side or B side) at end parts 1 a and 2 a of the structure members 1 and 2 and having distal end side parts projecting from the end parts 1 a and 2 a of the structure members 1 and 2 in the longitudinal direction 55.

The two structure members 1 and 2 are arranged close to each other with their end parts 1 a and 2 a facing each other.

Furthermore, in a state where the projecting parts 32 and 42 overlap the side parts (A sides or B sides) of the end parts 2 a and 1 a of the counterpart structure members 2 and 1 so as to be positioned on the sides opposite to each other, the two structure members 1 and 2 may be linearly connected to each other.

Here, it is preferable that the connection members 3 and 4 have substantially half parts thereof in the longitudinal direction 55 as the base parts 31 and 41 to be fixed to the structure members 1 and 2, and have the remaining substantially half parts (distal end side parts) thereof as projecting parts 32 and 42. In this way, when the end parts 1 a and 2 a of the structure members 1 and 2 are brought into a substantially butted state, as illustrated in a longitudinal sectional view of FIG. 2, the base parts 31 and 41 of the connection members 3 and 4, the side parts of the structure members 1 and 2, and the projecting parts 42 and 32 of the counterpart connection members 4 and 3 may triply overlap one another and be bolt-jointed (jointly fastened) to one another at a time with through-bolts (triple joint). Thus, the base parts 31 and 41 of the connection members 3 and 4 and the side parts of the structure members 1 and 2 are bolt-jointed to each other.

On the other hand, structurally, for example, as illustrated in FIG. 7A (to FIG. 7C), the base parts 31 and 41 can be made smaller than half of the connection members 3 and 4. In such a case, the side parts of the structure members 1 and 2 and the projecting part 42 and 32 of the counterpart connection members 4 and 3 are bolt-jointed to each other in a state where they doubly overlap each other (double joint). For this reason, since the base parts 31 and 41 of the connection members 3 and 4 and the side parts of the structure members 1 and 2 are not bolt-jointed (jointly fastened) to each other, for example, welded parts 75 a to 75 c or the like as described later are required for shearing joint. Furthermore, welded parts 75 d by plug welding, spot welding or the like may be provided as necessary.

Note that the linear connection by the two structure members 1 and 2 as described above can be used for connection between beams, connection between columns, or the like.

A close arrangement with the end parts 1 a and 2 a facing each other means a state where the end parts 1 a and 2 a of the structure members 1 and 2 are substantially butted to each other without misalignment.

A gap s (see FIG. 3) in the longitudinal direction 55 is provided between the end parts 1 a and 2 a of the two structure members 1 and 2 in order to provide the welded parts 75 c, but it is preferable that the gap s be as small as possible in order to ensure a required connection strength. Therefore, the gap s may be set to a size obtained by adding a clearance due to an accuracy error to a size of the welded part 75 c.

(4) As illustrated in FIG. 2, it is preferable that the projecting parts 32 and 42 (or the connection members 3 and 4) have cross sections smaller than those of the structure members 1 and 2.

Here, even though the cross sections of the projecting parts 32 and 42 are reduced to substantially half of the cross sections of the structure members 1 and 2, it is possible to secure a connection strength between the structure members 1 and 2.

(5) Furthermore, as illustrated in FIG. 3 (to FIG. 7C), the projecting parts 32 and 42 (or the connection members 3 and 4) may be integrally fixed to the side parts of the structure members 1 and 2 by welding (for example, the welded parts 75 a to 75 d).

Here, the welded parts 75 a to 75 d can be formed by welding the structure members 1 and 2 and the base parts 31 and 41 of the connection members 3 and 4 to each other by fillet welding, plug welding, spot welding, or the like. Specific welding will be described later.

Note that each of the structure members 1 and 2 or the projecting parts 32 and 42 (or the connection members 3 and 4) can have, for example, a flat panel shape or a rectangular shape, but is preferably configured as follows.

(6) As illustrated in FIG. 2, it is preferable that the structure members 1 and 2 be formed of H-shaped steel having a pair of flange parts 62 (two flanges) protruding to both sides in a direction perpendicular to both side edge parts of web parts 61.

In addition, it is preferable that the projecting parts 32 and 42 (or the connection members 3 and 4) be formed of light channel steel or the like (with a C-shaped cross section) having a pair of flange parts 66 (single flanges) protruding to one side in a direction perpendicular to both side edge parts of web parts 65.

It is preferable that the projecting parts 32 and 42 (or the connection members 3 and 4) be accommodated in the side parts (A side or B side) of the structure members 1 and 2.

Here, the two structure members 1 and 2 formed of the H-shaped steel are connected to each other in a state where at least outer surfaces of the flange parts 62 are connected to each other so as to be flush with each other. In a case of the structure members 1 and 2 or the connection members 3 and 4 extending in a horizontal direction, the web parts 61 and 65 become surfaces facing in the vertical direction, and both side edge parts of the web parts 61 and 65 become upper and lower edge parts. In addition, the flange parts 62 and 66 become surfaces extending in the horizontal direction. When such structure members 1 and 2 are connected to each other, upper and lower surfaces of the structure members 1 and 2 (the outer surface of the flange parts 62) become flatly connected surfaces.

The connection members 3 and 4 have sizes at which they can be accommodated in concave spaces formed on both sides of the structure members 1 and 2 formed of the H-shaped steel. The connection members 3 and 4 have sizes that are the same as or smaller than those of inner parts of the concave spaces formed on both sides of the structure members 1 and 2 formed of the H-shaped steel. Note that the connection members 3 and 4 can be accommodated in the side parts of the structure members 1 and 2 formed of the H-shaped steel even though they are not formed of the light channel steel.

In a case where the structure members 1 and 2 are formed of the H-shaped steel and the connection members 3 and 4 are formed of the light channel steel or the like, the welded parts 75 a to 75 c by the fillet welding or the like between the base parts 31 and 41 of the connection members 3 and 4 and the side parts (A sides or B sides) of the structure members 1 and 2 described above are configured as follows.

That is, as illustrated in FIG. 3, first welded parts 75 a in which the flange parts 62 and 66 are welded to each other in the longitudinal direction 55 along edge parts are first provided. Next, second welded parts 75 b in which the web parts 61 and 65 are welded to each other in a width direction (vertical direction in the drawing) (of the web parts 61 and 65) along the edge parts of the web parts 65 are provided as necessary. Furthermore, third welded parts 75 c in which the flange parts 62 and 66 are welded to each other in a width direction (direction perpendicular to a paper surface) (of the flange parts 62 and 66) along end edge parts of the flange parts 66 are provided as necessary.

The first welded parts 75 a and the third welded parts 75 c are mainly effective for transferring a moment. In addition, the second welded parts 75 b can also be used for transferring the moment. In a case where the base parts 31 and 41 of the connection members 3 and 4, the web parts 61 of the structure members 1 and 2, and the projecting parts 42 and 32 of the counterpart connection members 4 and 3 described above triply overlap one another and are bolt-jointed (jointly fastened) to each other at a time with the through-bolts, a shearing force is transferred by the bolt joint. Note that the first welded parts 75 a, the second welded parts 75 b, and the third welded parts 75 c have priorities in terms of strength, and the first welded parts 75 a are essential, but the second welded parts 75 b and the third welded parts 75 c may be provided as necessary.

In addition, when the web parts 61 of the structure members 1 and 2 and the projecting parts 42 and 32 of the counterpart connection members 4 and 3 doubly overlap each other and are bolt-jointed to each other as illustrated in FIG. 7A (to FIG. 7C), the welded parts 75 d by the plug welding, the spot welding or the like as described above are provided further as necessary. Note that the welded parts 75 d by the plug welding, the spot welding or the like can be replaced with welded parts 75 a to 75 c by the fillet welding or the like.

Note that in a case where the welded parts 75 a to 75 c by the welding are used as fillet welded parts or the like along the edge parts of the web parts 65, the edge parts of the flange parts 66, or the like, in the base parts 31 and 41 of the connection members 3 and 4, it is preferable that the fillet welding be performed using a step corresponding to a plate thickness of the web parts 65 generated between the edge parts of the web part 65 and the web parts 61, a step corresponding to a plate thickness of the flange parts 66 generated between the edge parts of the flange parts 66 and the flange part 62, or the like. In this case, it is preferable that the flange parts 66 of the connection members 3 and 4 be shorter than the flange parts 62 of the structure members 1 and 2 by at least a width or more of beads of the fillet welding so that the beads do not protrude from the concave spaces of the structure members 1 and 2 to the outside. As such, by making the welded parts 75 a to 75 c of the fillet welding equal to the plate thickness of the web parts 65 or the flange parts 66, the welded parts 75 a to 75 c can be maximized and a pulling dimension of the flange parts 66 with respect to the flange parts 62 can be shortened, which is structurally advantageous. In addition, in a case where partial penetration welding or the like is performed, beveling is performed between the edge parts of the web parts 61 and 65, between the edge parts of the flange parts 62 and 66, or the like.

(7) High-strength bolts 77 (or rivets) may be used (as the fasteners 51) for the bolt joint.

The high-strength bolts 77 (or the rivets) may be installed so as to penetrate between the web parts 61 of the structure members 1 and 2 and the distal end parts of the counterpart projecting parts 42 and 32 in a direction perpendicular to the web parts 61 at least within the side parts (A sides or B sides) of the structure members 1 and 2.

Alternatively, the high-strength bolts 77 (or the rivets) may be installed so as to penetrate among the web parts 61 of the structure members 1 and 2, the base parts 31 and 41 of the projecting parts 32 and 42 (or the connection members 3 and 4), and the distal end parts of the counterpart projecting parts 42 and 32 in the direction perpendicular to the web parts 61 within the side parts (A sides or B sides) of the structure members 1 and 2.

Here, the high-strength bolt 77 is the fastener 51 manufactured so as to be able to have a high strength to withstand a high tensile force and be able to make a tightening force uniform. In addition, the rivet can also be used for the purpose similar to that of the high-strength bolt 77. By using the high-strength bolts 77 or the rivets, it is possible to eliminate the need to fasten the flange parts 62 and 66 to each other by the fasteners 51 in terms of strength.

In addition, by using the high-strength bolts 77 or the rivets, it can be expected that the number of fasteners 51 that are used is reduced in the bolt joint parts between the web parts 61 and 65 as compared with a case of using normal bolts.

For example, three high-strength bolts 77 on one side of each web part 65 of the connection members 3 and 4, that is, a total of six high-strength bolts 77 or the like (hereinafter, it is assumed that the rivets are included in the “high-strength bolts 77 or the like”) are used in FIG. 3, but the number of high-strength bolts 77 or the like that are used may be reduced, for example, by using one high-strength bolt 77 on one side of each web part 65, that is, a total of two high-strength bolts 77 as illustrated in FIG. 5A or by using two high-strength bolts 77 on one side of each web part 65, that is, a total of four high-strength bolts 77 as illustrated in FIG. 5B.

In this case, the number of high-strength bolts 77 or the like can be reduced by increasing a diameter of the high-strength bolts 77 or the like. That is, by using high-strength bolts 77 or the like having a large diameter instead of using a large number of high-strength bolts 77 or the like having a small diameter, the number of bolt joint parts can be reduced. Note that it is preferable that the high-strength bolts 77 or the like used in each case be uniformed to have one size.

For example, as illustrated in FIG. 3 or 5B, in a case where the number of high-strength bolts 77 or the like on each side is pluralized, it is preferable that the high-strength bolts 77 or the like be installed so as to be spaced apart from each other as largely as possible in the width direction (vertical direction in the drawing) of the web parts 61 and 65. Thus, by increasing an interval between the high-strength bolts 77 or the like (in the vertical direction in the drawing), it is possible to obtain a larger proof stress against a moment Mb (see FIG. 10B) generated at the joint parts.

By the way, it is effective for a moment F1 or a shearing force F2 acting on the structure members 1 and 2 to increase the separation distance (distance e) between the distal end parts (between the joint parts) of the projecting parts 32 and 42, and the fasteners 51 such as the high-strength bolts 77 or the like need to be able to resist against a shearing force Qb between the joint parts and the moment Mb of the joint parts. By installing the high-strength bolts 77 or the like so as to be largely spaced apart from each other in the width direction (vertical direction in the drawing) of the web parts 61 and 65, it is possible to increase a couple of forces resisting against the moment Mb of the joint parts. In a case where the couple of forces is insufficient only by arranging the high-strength bolts 77 in the vertical direction or vertically, it is possible to reinforce the couple of forces by adding high-strength bolts 77 or the like along upper and lower positions of the web parts 61 and 65, as illustrated in FIG. 5C or 6A. In addition, it is possible to resist against the shearing force Qb between the joint parts by the number of the high-strength bolts 77 arranged in the vertical direction or vertically.

(8) The connection members 3 and 4 formed of the light channel steel or the like may be fitted (or inserted) into the side parts (A sides or B sides) of the web parts 61 of the structure members 1 and 2 formed of the H-shaped steel so that the web parts 61 and 65 are in surface contact with each other and the flange parts 62 and 66 are in surface contact with each other.

Here, the connection members 3 and 4 formed of the light channel steel or the like have a size and shape substantially equal (or slightly smaller) to those of the inner parts of the concave spaces of both side parts of the structure members 1 and 2 formed of the H-shaped steel. In this way, it is possible to insert and fit the projecting parts 32 and 42 of the connection members 3 and 4 formed of the light channel steel or the like into the side parts (A sides or B sides) of the web parts 61 of the structure members 1 and 2 formed of the H-shaped steel while securing a clearance for a dimensional error. By this fitting, substantially the entire parts including parts between the web parts 61 and 65 between outer shape surfaces of the connection members 3 and 4 and inner shape surfaces of the concave spaces in the side parts of the structure members 1 and 2 become contact parts to function as a good guide for a connection accuracy between the structure members 1 and 2. Note that contact surfaces between the web parts 61 and 65 become friction surfaces on which a frictional force is generated between surfaces of the web parts 61 of the structure members 1 and 2 and bolt tightening surfaces of the base parts 31 and 41 and the projecting parts 32 and 42 of the connection members 3 and 4, particularly in a case of the triple joint using the high-strength bolts 77 (note that such friction surfaces become unnecessary in a case of bearing joint such as rivet joint or the like).

Note that corner parts of the projecting parts 32 and 42 may be appropriately provided with round parts or the like for introduction in order to make it easy to insert the projecting parts 32 and 42 of the connection members 3 and 4 formed of the light channel steel or the like into the side parts (A sides or B sides) of the web parts 61 of the structure members 1 and 2 formed of the H-shaped steel.

(9) The structure members 1 and 2 may be connected to each other by the coupling structure described above to construct a construction structure body.

Here, it is preferable that the coupling structure described above be provided at at least one place or more. The construction structure body becomes a framework of the building.

<Action> Actions of this embodiment are as follows.

The coupling structure of this embodiment can have a connection structure that is basically the same as that of a method of connecting two rods 81 and 82 to each other so as to transfer a bending moment F1 and a shearing force F2 to each other by jointing positions of distal end parts of two places spaced apart from each other by a distance e to each other (joint parts 83 and 84) in a state where the distal end parts of the two rods 81 and 82 overlap each other in a longitudinal direction at as illustrated in FIG. 8A.

A bending moment generated in the two rods 81 and 82 when simple bending is applied to the two rods 81 and 82 is as illustrated in a moment diagram of FIG. 8B. According to this drawing, both end parts of the connected rods 81 and 82 are supported from below, a force P is applied from above to intermediate parts of the two rods 81 and 82, and assuming pin joint in which a moment is not generated at the joint parts 83 and 84, a bending moment as illustrated in the drawing is generated. In this case, in a section of a distance e between the joint parts 83 and 84 of two places, the bending moment generated in each rod 81 and 82 is gradually decreased toward a distal end side, such that the bending moment is halved at a central part of the section of the distance e. For this reason, in the section of the distance e, a necessary connection strength can be ensured even though cross sections of the rods 81 and 82 are gradually reduced. Alternatively, a necessary connection strength can be ensured even though the cross sections of the rods 81 and 82 are halved forward from the central part of the section of the distance e.

Therefore, as illustrated in FIG. 9, in order to successfully apply the method of connecting the two rods 81 and 82 to each other described above to connection parts between the structure members 1 and 2, the end parts 1 a and 2 a of the structure members 1 and 2 are first arranged in a state close to a substantially butted state at the central part of the section of the distance e. Then, the projecting parts 32 and 42 having a small cross section extend from one side surfaces of the end parts 1 a and 2 a of the structure members 1 and 2, and the bolt joint is performed at the positions of the distal end parts of the two places of the projecting parts 32 and 42 spaced apart from each other. As such, when the method of connecting the two rods 81 and 82 to each other is simply applied to the connection between the structure members 1 and 2, it becomes the example illustrated in FIG. 1 (to FIG. 4).

In this case, the gaps may be provided between the end parts 1 a and 2 a of the structure members 1 and 2. However, it is preferable that the gap s be as small as possible as described above.

Furthermore, as illustrated in FIG. 3 or FIG. 5B, the number of fasteners 51 (high-strength bolts 77) used at the distal end parts of the two places of the projecting parts 32 and 42 spaced apart from each other are pluralized, and an interval between the fasteners 51 in the vertical direction in the drawings are increased. In this case, as illustrated in FIG. 10A (FIG. 10B), since the moment Mb generated in the joint parts 83 and 84 can be transferred by the plurality of fasteners 51, a gradient of the bending moment F1 generated in a section indicated by the distance e in the drawing and denoted by a broken line m is decreased as illustrated by a solid line n and the shearing force Qb is decreased. Therefore, a shearing force applied to the projecting parts 32 and 42 can be reduced, which is structurally advantageous.

<Effect> According to this embodiment, the following effects can be obtained.

(Effect 1) The structure members 1 and 2 integrally have the projecting parts 32 and 42 projecting from one side part (A side or B side) thereof, respectively.

In addition, the two structure members 1 and 2 are close to each other, and the projecting parts 32 and 42 are arranged to overlap the side parts (A sides or B sides) of the counterpart structure members 2 and 1 so as to be positioned on sides opposite to each other, respectively.

The projecting parts 32 and 42 and the side parts (A sides or B sides) of the counterpart structure members 2 and 1 are each fixed by the bolt joint.

Thus, it is possible to directly connect the two structure members 1 and 2 to each other only by providing the projecting parts 32 and 42 (two connection members 3 and 4) in the structure members 1 and 2 in advance. Therefore, as in a comparative example of FIG. 11, it is possible to eliminate the need to use a large number of slice plates 300 (eight in FIG. 11) separate from structure members 100 and 200 for connection between the structure members 100 and 200. As a result, it is possible to certainly perform connection between the structure members 1 and 2 with a small number of connection members 3 and 4 or a small number of fasteners 51 as a whole, such that it is possible to reduce a component cost or shorten a construction time.

In this case, by adopting a structure in which the projecting parts 32 and 42 (connection members 3 and 4) are integrally fixed in advance to one side part (A side or B side) of the structure members 1 and 2, it is possible to connect the structure members 1 and 2 to each other without a misalignment or a step.

In addition, by attaching the projecting parts 32 and 42 (connection members 3 and 4) to the structure members 1 and 2 in advance, the structure members 1 and 2 and the connection members 3 and 4 are integrated into one component. Therefore, it is not necessary to handle the slice plates 300 as illustrated in FIG. 11 at the site, such that construction at the site can be facilitated and a construction time can be shortened. Furthermore, because of a simple structure in which the connection members 3 and 4 are only attached to the side parts (A sides or B sides) of the structure members 1 and 2 in a projecting state, it is not necessary to process the end parts 1 a and 2 a of the structure members 1 and 2 or allow the end parts 1 a and 2 a of the structure members 1 and 2 to have a special shape, such that it does not require time and effort for processing at the site or the like.

In addition, since the projecting parts 32 and 42 (connection members 3 and 4) are fixed to one side part (A side or B side) of the structure members 1 and 2, the connection members 3 and 4 or the fasteners 51 such as bolts or the like can have a structure in which they do not protrude to surface sides (edge part sides) of the structure members 1 and 2. Therefore, the coupling structure between the structure members 1 and 2 is flat and flush with outer surfaces of the flange parts 62 without irregularities or protrusions due to bolts (fasteners 51) or the slice plate 300 as illustrated in FIG. 11 to have a good appearance.

For this reason, in a case where the construction structure body is constructed by assembling the structure members 1 and 2 to each other using this coupling structure, for example, it is possible to eliminate interference between floor members, wall members or the like installed around the structure members 1 and 2 and the connection members 3 and 4 or the fasteners 51 such as the bolts or the like. In addition, since the connection members 3 and 4 or the fasteners 51 such as the bolts or the like do not jump out to the surface sides of the structure members 1 and 2, the floor members, the wall members or the like can be installed so as to be good in terms of space efficiency, such that a large indoor space can be secured.

(Effect 2) The bolt joint between the respective projecting parts 32 and 42 and the side parts of the counterpart structure members 2 and 1 may be performed at least at positions of the distal end parts of the two places of the respective projecting parts 32 and 42 spaced apart from each other. Thus, it is possible to connect the structure members 1 and 2 to each other with a good efficiency and a high strength even with a small number of bolt joints.

(Effect 3) The projecting parts 32 and 42 are configured by the connection members 3 and 4 including the base parts 31 and 41 fixed to one side part (A side or B side) at the end parts 1 a and 2 a of the structure members 1 and 2 and having the distal end side parts projecting from the end parts 1 a and 2 a of the structure members 1 and 2 in the longitudinal direction 55. Thus, it is possible to certainly provide the projecting parts 32 and 42 in the structure members 1 and 2.

In addition, the two structure members 1 and 2 may be brought close to each other with their end parts 1 a and 2 a facing each other, and in a state where the projecting parts 42 and 32 overlap the side parts of the end parts 2 a and 1 a of the counterpart structure members 2 and 1 so as to be positioned on the sides opposite to each other, the two structure members 1 and 2 may be linearly connected to each other. Thus, it is possible to easily and certainly connect linearly the two structure members 1 and 2 to each other without causing the misalignment or the step.

(Effect 4) The connection members 3 and 4 may have the cross sections than those of the structure members 1 and 2. Even though the cross sections of the connection members 3 and 4 are reduced as such, it is possible to connect the structure members 1 and 2 to each other in a state where shapes of the connection parts do not become large while ensuring a necessary connection strength.

(Effect 5) The projecting parts 32 and 42 are integrally fixed to the side parts (A sides or B sides) of the structure members 1 and 2 by the welding (for example, the welded parts 75 a to 75 d). Specifically, in a state where the base parts 31 and 41 of the connection members 3 and 4 are accommodated in the side parts (A sides or B sides) of the structure members 1 and 2, the first welded parts 75 a in which the flange parts 62 and 66 are welded to each other in the longitudinal direction 55 along the edge parts, the second welded parts 75 b in which the web parts 61 and 65 are welded to each other in the width direction (of the web parts 61 and 65) along the edge parts of the web parts 65, the third welded parts 75 c in which the flange parts 62 and 66 are welded to each other in the width direction (of the flange parts 62 and 66) along the edge parts of the flange parts 66, or the like, are provided.

In this case, as illustrated in FIG. 3, the welded parts 75 a, 75 b, and 75 c function to receive the bending moment F1 generated in the structure members 1 and 2 (through the connection members 3 and 4) and transfer the bending moment F1 to the counterpart structure member 2 and 1, and the welded parts 75 b function to receive the shearing force F2 generated in the structure members 1 and 2 or the bolt joint parts function to receive the shearing force F2 generated in the structure members 1 and 2 (through the connection members 3 and 4) in a case where the base parts 31 and 41 of the connection members 3 and 4 are jointed to the structure members 1 and 2 by the bolt joint and transfer the shearing force F2 to the counterpart structure members 1 and 2, such that it is possible to make the structure members 1 and 2 robust against the bending moment F1 or the shearing force F2.

In addition, by accommodating the base parts 31 and 41 of the connection members 3 and 4 in the concave spaces of the side parts (A sides or B sides) of the structure members 1 and 2 and then welding the base parts 31 and 41 to the side parts of the structure members 1 and 2, the base parts 31 and 41 of the connection members 3 and 4 can be certainly fixed without jumping out to the surface sides of the structure members 1 and 2.

Furthermore, by correcting welding distortion of welded parts of the connection members 3 and 4 with respect to the structure members 1 and 2 in advance, skeleton accuracy of the construction structure body constructed using this coupling structure can be improved as compared with the comparative example of FIG. 11.

(Effect 6) The structure members 1 and 2 may be formed of the H-shaped steel, the connection members 3 and 4 may be formed of the light channel steel or the like, and the projecting parts 42 and 32 (or the connection members 3 and 4) may be arranged so as to be accommodated in the side parts (A side or B side) of the structure members 1 and 2. Thus, it is possible to install the connection members 3 and 4 in a state where the connection members 3 and 4 are accommodated like a nesting inside the side parts (A sides or B sides) of the structure members 1 and 2 which are formed of the H-shaped steel, and it is possible to accommodate the connection members 3, 4, the fasteners 51 or the like in the side parts of the structure members 1 and 2 so as not to project from the structure members 1 and 2. The connection members 3 and 4 are formed of the light channel steel or the like, such that the connection members 3 and 4 can have an optimal shape for installation in the side parts (A sides or B sides) of the structure members 1 and 2 formed of the H-shaped steel. In particular, by installing the light channel steel or the like in an outward open state inside the H-shaped steel, the fasteners 51 can be accommodated inside the light channel steel or the like.

(Effect 7) The high-strength bolts 77 (or the rivets) may be used for the bolt joint. Thus, it is possible to firmly bolt-joint the structure members 1 and 2 to each other.

In addition, by allowing the high-strength bolts 77 or the like to penetrate at least between the web parts 61 of the structure members 1 and 2 and at least the distal end parts of the counterpart projecting parts 42 and 32 or between the web parts 61 of the structure members 1 and 2, the base parts 31 and 41 of the connection members 3 and 4, and at least the distal end parts of the counterpart projecting parts 42 and 32, it is possible to obtain a necessary connection strength. Therefore, there is no need to fix the flange parts 62 and 66 of the structure members 1 and 2 or the connection members 3 and 4 with bolts, such that a connection structure in which the high-strength bolts 77 or the like does not jump out to the surface sides (edge part sides) of the flange parts 62 of the structure members 1 and 2 becomes possible. Since the flange parts 62 and 66 of the structure members 1 and 2 or the connection members 3 and 4 are not fixed with the bolts, larger high-strength bolts 77 or the like can be used within a range in which they are accommodated in the side parts (A sides or B sides) of the structure members 1 and 2.

Furthermore, by performing friction-joint using the high-strength bolts 77, it is possible to increase a clearance between the bolt holes 52 and the high-strength bolts 77 and eliminate looseness after bolt-fastening. By tightening of the high-strength bolts 77, the structure members 1 and 2 formed of the H-shaped steel and the connection members 3 and 4 formed of the light channel steel or the like can be attracted to each other and more strongly brought into contact with each other.

(Effect 8) In a state where the connection members 3 and 4 formed of the light channel steel or the like are inserted into the side parts (A sides or B sides) of the structure members 1 and 2 formed of the H-shaped steel, the web parts 61 and 65 and the flange parts 62 and 66 may be in surface contact with each other. Thus, it is possible to increase the cross sections of the connection members 3 and 4 (up to the side parts of the structure members 1 and 2). Therefore, the connection members 3 and 4 can easily secure cross sections having sizes necessary for connecting the structure members 1 and 2 to each other.

Furthermore, the structure members 1 and 2 and the connection members 3 and 4 are in surface contact with each other, the connection members 3 and 4 can be easily attached to the structure members 1 and 2 (the bolt joint or the welding can be easily performed or a welding length sufficient for the welding can be secured). Therefore, a joint strength between the structure members 1 and 2 and the connection members 3 and 4 can be increased. Furthermore, by setting the fitted state as mentioned above, it is possible to make it difficult for the step to be generated between the structure members 1 and 2 connected to each other.

(Effect 9) According to the construction structure body of this embodiment, actions and effects similar to those of the coupling structure described above can be obtained.

Although the embodiment of the present invention has been described in detail with drawings hereinabove, the embodiment is only an example of the present invention. Therefore, it goes without saying that the present invention is not limited to the configuration of the embodiment, and a design change or the like without departing from the gist of the present invention is included in the present invention. In addition, for example, in a case where a plurality of configurations are included in each embodiment, it goes without saying that possible combinations of these configurations are included even though not particularly described. Further, in a case where a plurality of embodiments and modifications are disclosed as those of the present invention in the embodiment, it goes without saying that possible combinations of combinations of configurations over these embodiments and modifications are included even though not particularly described. Further, it goes without saying that configurations illustrated in the drawings are included even though not particularly described. Furthermore, in a case where there is a term such as “or the like”, the term is used in the sense of including an equivalent. In addition, in a case where there are terms such as “substantially”, “about”, “approximately”, and the like, these terms are used in the sense of including those in a range or accuracy recognized by common sense. 

1. A coupling structure in which two structure members are connected to each other, wherein the structure members integrally have projecting parts projecting from one side part of the structure members, respectively, the two structure members are close to each other and the projecting parts overlap side parts of counterpart structure members so as to be positioned on sides opposite to each other, respectively, and the projecting parts and the side parts of the counterpart structure members are each fixed by bolt joint.
 2. The coupling structure according to claim 1, wherein the bolt joint between the respective projecting parts and the side parts of the counterpart structure members is performed at least at positions of distal end parts of two places of the respective projecting parts spaced apart from each other.
 3. The coupling structure according to claim 1, wherein the projecting parts are configured by connection members including base parts fixed to one side part at end parts of the structure members and having distal end side parts projecting from the end parts of the structure members in a longitudinal direction, and the two structure members are arranged close to each other with their end parts facing each other, and in a state where the projecting parts overlap the side parts of the end parts of the counterpart structure members so as to be positioned on the sides opposite to each other, the two structure members are linearly connected to each other.
 4. The coupling structure according to claim 1, wherein the projecting parts have cross sections smaller than those of the structure members.
 5. The coupling structure according to claim 1, wherein the projecting parts are integrally fixed to the side parts of the structure members by welding.
 6. The coupling structure according to claim 1, wherein the structure members are formed of H-shaped steel having a pair of flange parts protruding to both sides in a direction perpendicular to both side edge parts of web parts, the projecting parts are formed of light channel steel having a pair of flange parts protruding to one side in a direction perpendicular to both side edge parts of web parts, and the projecting parts are accommodated in the side parts of the structure members.
 7. The coupling structure according to claim 6, wherein high-strength bolts are used for the bolt joint, and the high-strength bolts penetrate between the web parts of the structure members and the distal end parts of the counterpart projecting parts in a direction perpendicular to the web parts at least within the side parts of the structure members.
 8. The coupling structure according to claim 6, wherein the connection members formed of the light channel steel are fitted into the side parts of the web parts of the structure members formed of the H-shaped steel so that the web parts are in surface contact with each other and the flange parts are in surface contact with each other.
 9. A construction structure body comprising the structure members connected to each other by the coupling structure according to claim
 1. 10. The coupling structure according to claim 2, wherein the projecting parts are configured by connection members including base parts fixed to one side part at end parts of the structure members and having distal end side parts projecting from the end parts of the structure members in a longitudinal direction, and the two structure members are arranged close to each other with their end parts facing each other, and in a state where the projecting parts overlap the side parts of the end parts of the counterpart structure members so as to be positioned on the sides opposite to each other, the two structure members are linearly connected to each other.
 11. The coupling structure according to claim 7, wherein the connection members formed of the light channel steel are fitted into the side parts of the web parts of the structure members formed of the H-shaped steel so that the web parts are in surface contact with each other and the flange parts are in surface contact with each other. 